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| author | Andrea Fioraldi <andreafioraldi@gmail.com> | 2019-11-11 14:36:06 +0100 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-11-11 14:36:06 +0100 |
| commit | 659db7e421b47da4b04110a141d9c20307f74ecc (patch) | |
| tree | 18f9c38cc5270adcf445a62b974712cead4a01c4 /qemu_mode/patches/i386-fpu_helper.diff | |
| parent | cd84339bccc104a51a5da614a9f82cc4ae615cce (diff) | |
| parent | 01d55372441960c435af8f3bd6b61d1302042728 (diff) | |
| download | afl++-659db7e421b47da4b04110a141d9c20307f74ecc.tar.gz | |
Merge branch 'master' into radamsa
Diffstat (limited to 'qemu_mode/patches/i386-fpu_helper.diff')
| -rw-r--r-- | qemu_mode/patches/i386-fpu_helper.diff | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/qemu_mode/patches/i386-fpu_helper.diff b/qemu_mode/patches/i386-fpu_helper.diff new file mode 100644 index 00000000..3bd09d9c --- /dev/null +++ b/qemu_mode/patches/i386-fpu_helper.diff @@ -0,0 +1,54 @@ +diff --git a/target/i386/fpu_helper.c b/target/i386/fpu_helper.c +index ea5a0c48..89901315 100644 +--- a/target/i386/fpu_helper.c ++++ b/target/i386/fpu_helper.c +@@ -384,10 +384,16 @@ void helper_fxchg_ST0_STN(CPUX86State *env, int st_index) + + static const int fcom_ccval[4] = {0x0100, 0x4000, 0x0000, 0x4500}; + ++#include "../patches/afl-qemu-common.h" ++ + void helper_fcom_ST0_FT0(CPUX86State *env) + { + int ret; + ++ if (afl_compcov_level > 2 && env->eip < afl_end_code && ++ env->eip >= afl_start_code) ++ afl_float_compcov_log_80(env->eip, ST0, FT0); ++ + ret = floatx80_compare(ST0, FT0, &env->fp_status); + env->fpus = (env->fpus & ~0x4500) | fcom_ccval[ret + 1]; + } +@@ -396,6 +402,10 @@ void helper_fucom_ST0_FT0(CPUX86State *env) + { + int ret; + ++ if (afl_compcov_level > 2 && env->eip < afl_end_code && ++ env->eip >= afl_start_code) ++ afl_float_compcov_log_80(env->eip, ST0, FT0); ++ + ret = floatx80_compare_quiet(ST0, FT0, &env->fp_status); + env->fpus = (env->fpus & ~0x4500) | fcom_ccval[ret + 1]; + } +@@ -407,6 +417,10 @@ void helper_fcomi_ST0_FT0(CPUX86State *env) + int eflags; + int ret; + ++ if (afl_compcov_level > 2 && env->eip < afl_end_code && ++ env->eip >= afl_start_code) ++ afl_float_compcov_log_80(env->eip, ST0, FT0); ++ + ret = floatx80_compare(ST0, FT0, &env->fp_status); + eflags = cpu_cc_compute_all(env, CC_OP); + eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | fcomi_ccval[ret + 1]; +@@ -418,6 +432,10 @@ void helper_fucomi_ST0_FT0(CPUX86State *env) + int eflags; + int ret; + ++ if (afl_compcov_level > 2 && env->eip < afl_end_code && ++ env->eip >= afl_start_code) ++ afl_float_compcov_log_80(env->eip, ST0, FT0); ++ + ret = floatx80_compare_quiet(ST0, FT0, &env->fp_status); + eflags = cpu_cc_compute_all(env, CC_OP); + eflags = (eflags & ~(CC_Z | CC_P | CC_C)) | fcomi_ccval[ret + 1]; |